I can't tell if the flaps on this are opened by air pressure, but this would be nice if it worked: http://doityourself.com/store/7890676.htm
that's what bluefront is talking about, but the plastic flaps are too heavy and it is an blow only
That's some pretty radical thinking you've got going on there!
First, I don't see any reason why the rear vent would ever close. Whether one or both of the fans is turned on, negative case pressure will open it up.
perhaps if the flaps were:
horizontal vs vertical (lll vs =) gravity might come into play
steeper angle l to \ to even ---
Second, and most importantly, is the PSU in the traditional location, just above the CPU? Looks like it. In that case, you're sucking up CPU warmed air into the PSU. This will either cause the PSU to ramp up or you've modded things so that the PSU will simply suffer the temperature rise defenselessly. The former won't be quiet; the latter means risking damage to the PSU.
This was the original plan
but unless I figure out how to successfully mount the seasonic PSU for better airflow (bare PSU), which would involve cutting that I don't want to do for something that may not work, not to mention dangerous capacitors not covered
now a pass thru PSU(such as a Antec HE) might fit the profile better, but I want to work with what I have and cheaply
I've made this defense before, would one expect a seasonic to be able to withstand high temps?
what is the ATX standard?
Third, I don't see a need for the middle one-way vent. With both fans on, there wont be much airflow in either direction across that vent.
It's funner this way
Here's my recommendation:
| | |
exhaust <--| PSU | |
intake -->: CPU |
intake -->: VM101  ---> exhaust/intake
It's your layout, minus the partitions. There are a total of two fans--the PSU fan and the front fan.
In "single fan mode", only the PSU fan is running. The negative case pressure sucks air into all three of the openings. This provides cool fresh air for the hard drive but only a little air for the VM101. The PSU sucks up air warmed by the CPU and GPU, but this is cooled by air bypassing the heatsinks from the upper and front intakes. The CPU receives maybe half the airflow; it's a Ninja so I think it'll be okay. Conversely, the temperature of the air entering the PSU has only about half the temperature rise above ambient as the CPU "exhaust".
I feel that it'd leave to many openings to be effective
the majority of the air would just go thru the CPU, assuming all the opening are the same size
now if the intakes were smaller it might cool better
but now we come to the debate GPU vs PSU? (temp wise)
keep in mind, that I'm a bit of a temp freak, while I'm willing to accept higher temps, when things get too hot
In "two fan mode", both the PSU fan and the front fan is running, with the front fan running stronger than the PSU fan. Much of the CPU heated air is pulled forward/down to the front exhaust fan. The VM101 gets plenty of airflow, which is also pulled forward to the front exhaust fan. The PSU receives air only slightly heated up by the CPU heatsink. The only loser is the hard drive--it receives air heated by both the CPU and GPU.
more interesting, I like it, but if it doesn't work with the one fan concept, then what's the benefit?
Remember my goal is to be mostly operating on one fan with the best cooling efficiency which I think that my design with one fan would cool better
I'm working a third revision
Thanks for the input guys, keep that criticism/praise coming!